From b0b4c58df8fba8f7ea36c69bbdb517f9732b1bcf Mon Sep 17 00:00:00 2001
From: lijunlong <lijunlong@openresty.com>
Date: Tue, 11 Jun 2024 09:44:50 +0800
Subject: doc: add comment for dtoa.c.

---
 dtoa.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/dtoa.c b/dtoa.c
index 33fd6f0..19a0cae 100644
--- a/dtoa.c
+++ b/dtoa.c
@@ -1,3 +1,7 @@
+/* The code comes from https://portal.ampl.com/~dmg/netlib/fp/dtoa.c
+ * Go to https://portal.ampl.com/~dmg/netlib/fp/changes for the detailed changes.
+ */
+
 /****************************************************************
  *
  * The author of this software is David M. Gay.
-- 
cgit v1.2.3-55-g6feb